Study questions Yellowstone grizzly rebound
FILE - In this Wednesday, July 6, 2011, file photo, a grizzly bear roams near Beaver Lake in Yellowstone National Park, Wy. Federal officials have reported a dramatic increase in bear numbers in recent decades and estimate more than 700 now live in and around Yellowstone National Park. (AP Photo/Jim Urquhart,File)
This May 30, 2013 photograph provided by Wolves of the Rockies shows a grizzly bear at Mary Bay along Yellowstone Lake in Yellowstone National Park. A new study says flaws in how the government measures Yellowstone's grizzly population raise questions about whether the animals have recovered sufficiently to merit lifting federal protections, according to a new study. (AP Photo/Wolves of the Rockies, Marc Cooke)
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